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Matt Caswell 338a5e7e54 Fix DTLS handshake message size checks. 
In |dtls1_reassemble_fragment|, the value of
|msg_hdr->frag_off+frag_len| was being checked against the maximum
handshake message size, but then |msg_len| bytes were allocated for the
fragment buffer. This means that so long as the fragment was within the
allowed size, the pending handshake message could consume 16MB + 2MB
(for the reassembly bitmap). Approx 10 outstanding handshake messages
are allowed, meaning that an attacker could consume ~180MB per DTLS
connection.

In the non-fragmented path (in |dtls1_process_out_of_seq_message|), no
check was applied.

Fixes CVE-2014-3506

Wholly based on patch by Adam Langley with one minor amendment.

Reviewed-by: Emilia Käsper <emilia@openssl.org>
2014-08-06 22:02:00 +01:00
..
.cvsignore Add emacs cache files to .cvsignore. 2005-04-11 14:17:07 +00:00
bio_ssl.c PR: 2529 2011-05-25 15:15:43 +00:00
d1_both.c Fix DTLS handshake message size checks. 2014-08-06 22:02:00 +01:00
d1_clnt.c PR: 2748 2012-03-06 13:20:20 +00:00
d1_enc.c Update DTLS code to match CBC decoding in TLS. 2013-02-05 16:50:33 +00:00
d1_lib.c Free up s->d1->buffered_app_data.q properly. 2014-06-02 14:40:45 +01:00
d1_meth.c Initialize SSL_METHOD structures at compile time. This removes the need 2005-08-05 23:52:08 +00:00
d1_pkt.c DTLS message_sequence number wrong in rehandshake ServerHello 2013-08-13 19:00:59 +01:00
d1_srvr.c Fix DTLS certificate requesting code. 2014-07-15 18:24:14 +01:00
dtls1.h PR: 2230 2010-04-14 00:17:12 +00:00
install.com Functional VMS changes submitted by sms@antinode.info (Steven M. Schweda). 2009-05-15 16:37:29 +00:00
kssl.c Submitted by: Tomas Hoger <thoger@redhat.com> 2010-03-03 15:34:11 +00:00
kssl.h Make kerberos ciphersuite code work with newer header files 2005-04-09 23:55:55 +00:00
kssl_lcl.h To avoid commit wars over dependencies, let's make it so things that 2001-10-10 07:55:02 +00:00
Makefile make update 2013-02-05 16:50:36 +00:00
s2_clnt.c Add and use a constant-time memcmp. 2013-02-05 16:50:32 +00:00
s2_enc.c ensure that the EVP_CIPHER_CTX object is initialized 2007-02-16 20:40:07 +00:00
s2_lib.c Update from HEAD. 2007-01-21 16:07:25 +00:00
s2_meth.c Initialize SSL_METHOD structures at compile time. This removes the need 2005-08-05 23:52:08 +00:00
s2_pkt.c Add and use a constant-time memcmp. 2013-02-05 16:50:32 +00:00
s2_srvr.c Assorted bugfixes: 2011-02-03 12:04:48 +00:00
s3_both.c Add and use a constant-time memcmp. 2013-02-05 16:50:32 +00:00
s3_cbc.c Check DTLS_BAD_VER for version number. 2013-02-12 15:12:52 +00:00
s3_clnt.c Accept CCS after sending finished. 2014-06-14 22:26:56 +01:00
s3_enc.c Fix alert handling. 2014-03-27 00:54:16 +00:00
s3_lib.c Fix compilation with this branch's definition of SSL_CIPHER. 2013-10-04 14:55:01 +01:00
s3_meth.c Initialize SSL_METHOD structures at compile time. This removes the need 2005-08-05 23:52:08 +00:00
s3_pkt.c Remove redundant check. 2014-06-27 23:18:40 +01:00
s3_srvr.c Don't limit message sizes in ssl3_get_cert_verify. 2014-07-05 13:32:40 +01:00
s23_clnt.c Fix alert handling. 2014-03-27 00:54:16 +00:00
s23_lib.c Fix ECC SSLv2 exclusion on OpenSSL 0.9.8. 2014-07-07 13:00:07 +01:00
s23_meth.c make "./configure no-ssl2" work again 2006-01-15 16:57:01 +00:00
s23_pkt.c Reorder inclusion of header files: 2002-07-10 07:01:54 +00:00
s23_srvr.c PR: 2171 2010-02-16 14:19:42 +00:00
ssl-lib.com Add t1_reneg to the VMS build. 2010-02-22 07:05:24 +00:00
ssl.h Fix alert handling. 2014-03-27 00:54:16 +00:00
ssl2.h Implement msg_callback for SSL 2.0. 2001-11-10 01:16:28 +00:00
ssl3.h Fix for CVE-2014-0224 2014-06-03 16:30:23 +01:00
ssl23.h Import of old SSLeay release: SSLeay 0.9.0b 1998-12-21 10:56:39 +00:00
ssl_algs.c Add SHA2 algorithms to SSL_library_init(). Although these aren't used 2010-04-07 13:19:48 +00:00
ssl_asn1.c Fix gcc 4.6 warnings. Check TLS server hello extension length. 2010-06-12 13:18:58 +00:00
ssl_cert.c PR: 1731 and maybe 2197 2010-03-24 23:16:35 +00:00
ssl_ciph.c Fix off-by-one errors in ssl_cipher_get_evp() 2014-06-22 23:26:33 +01:00
ssl_err.c Fix alert handling. 2014-03-27 00:54:16 +00:00
ssl_err2.c Use new-style system-id macros everywhere possible. I hope I haven't 2001-02-20 08:13:47 +00:00
ssl_lib.c Check sk_SSL_CIPHER_num() after assigning sk. 2014-05-12 23:07:44 +01:00
ssl_locl.h ssl/*: remove SSL3_RECORD->orig_len to restore binary compatibility. 2013-02-07 15:03:00 +00:00
ssl_rsa.c PR: 1411 2009-09-12 23:09:59 +00:00
ssl_sess.c PR: 2160 2010-02-01 16:48:40 +00:00
ssl_stat.c Don't disable state strings with no-ssl2 2014-06-28 00:57:18 +01:00
ssl_task.c Security fixes brought forward from 0.9.7. 2002-11-13 15:43:43 +00:00
ssl_txt.c Add strings for DTLS protocol versions 2010-01-16 19:02:43 +00:00
ssltest.c Fix in ssltest is no-ssl2 configured 2013-02-11 18:27:33 +00:00
t1_clnt.c Initialize SSL_METHOD structures at compile time. This removes the need 2005-08-05 23:52:08 +00:00
t1_enc.c Fix for non compilation with TLS_DEBUG defined 2014-05-25 00:02:38 +01:00
t1_lib.c Fix memory leak. 2014-06-29 13:54:21 +01:00
t1_meth.c Initialize SSL_METHOD structures at compile time. This removes the need 2005-08-05 23:52:08 +00:00
t1_reneg.c Update RI to match latest spec. 2009-12-27 23:03:40 +00:00
t1_srvr.c Initialize SSL_METHOD structures at compile time. This removes the need 2005-08-05 23:52:08 +00:00
tls1.h Backport TLS 1.1/1.2 #defines 2013-10-04 14:55:01 +01:00